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/**
* @file
*
* @brief POSIX Message Queues Private Private Support
*
* This include file contains all the private support information for
* POSIX Message Queues.
*
* The structure of the routines is identical to that of POSIX
* Message_queues to leave the option of having unnamed message
* queues at a future date. They are currently not part of the
* POSIX standard but unnamed message_queues are. This is also
* the reason for the apparently unnecessary tracking of
* the process_shared attribute. [In addition to the fact that
* it would be trivial to add pshared to the mq_attr structure
* and have process private message queues.]
*
* This code ignores the O_RDONLY/O_WRONLY/O_RDWR flag at open
* time.
*/
/*
* COPYRIGHT (c) 1989-2011.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _RTEMS_POSIX_MQUEUE_H
#define _RTEMS_POSIX_MQUEUE_H
#include <rtems/score/coremsg.h>
#include <rtems/score/objectdata.h>
#include <limits.h>
#include <mqueue.h>
#include <signal.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup POSIX_MQUEUE_P Message Queues Private Support
*
* @ingroup POSIXAPI
*
*/
/**@{**/
/*
* Data Structure used to manage a POSIX message queue
*/
typedef struct {
Objects_Control Object;
CORE_message_queue_Control Message_queue;
bool linked;
uint32_t open_count;
struct sigevent notification;
int oflag;
} POSIX_Message_queue_Control;
/**
* @brief The POSIX Message Queue objects information.
*/
extern Objects_Information _POSIX_Message_queue_Information;
/**
* @brief Macro to define the objects information for the POSIX Message Queue
* objects.
*
* This macro should only be used by <rtems/confdefs.h>.
*
* @param max The configured object maximum (the OBJECTS_UNLIMITED_OBJECTS flag
* may be set).
*/
#define POSIX_MESSAGE_QUEUE_INFORMATION_DEFINE( max ) \
OBJECTS_INFORMATION_DEFINE( \
_POSIX_Message_queue, \
OBJECTS_POSIX_API, \
OBJECTS_POSIX_MESSAGE_QUEUES, \
POSIX_Message_queue_Control, \
max, \
_POSIX_PATH_MAX, \
NULL \
)
/** @} */
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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